cy-execute-task

A workflow for implementing one task from a product requirements document from start to finish. It reads the task and related project documents, changes the code, validates the result, and updates task tracking.

In plain words
What is it for?
Use it for a specific PRD task when you have its task file, PRD directory, tracking-file paths, and commit-mode setting.
Why use it?
It keeps implementation tied to the approved requirements and technical decisions. This reduces missed acceptance criteria and stale task records.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/compozy/skeeper/cy-execute-task
Any agent
npx skills add compozy/skeeper --skill cy-execute-task
Clone the repo
git clone --depth 1 https://github.com/compozy/skeeper

Made for: Claude Code, Codex.

Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 792 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00080 $0.00792
Opus 5 $0.00040 $0.00396
Sonnet 5 $0.00016 $0.00158
Haiku 4.5 $0.00008 $0.00079

Measured 2d ago against content hash 976f78ba1d9a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cy-execute-task scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/cy-execute-task/SKILL.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Execute PRD Task

Execute one PRD task from exploration through tracking updates.

Required Inputs

  • Task specification markdown.
  • PRD directory path.
  • Task file path.
  • Master tasks file path.
  • Auto-commit mode.
  • Optional workflow memory directory path.
  • Optional shared workflow memory path.
  • Optional current task memory path.

Workflow

  1. Ground in repository and PRD context.

    • Read the provided task specification.
    • Read the repository guidance files named by the caller.
    • Read the PRD documents under the provided directory, especially _techspec.md and _tasks.md.
    • Read ADRs from the adrs/ subdirectory of the PRD directory to understand the architectural decision context for this task.
    • After reading all sources, check for conflicts between the task specification, techspec, and ADRs. If any requirements contradict each other, stop and report the conflict instead of guessing — do not proceed to step 2.
    • If the caller provides workflow memory paths, use the installed cy-workflow-memory skill before editing code.
    • Reconcile the current workspace state before new edits.
  2. Build the execution checklist.

    • Extract deliverables, acceptance criteria, and every explicit Validation, Test Plan, or Testing item into a numbered working checklist.
    • Print the full checklist before starting implementation so it is visible and trackable.
    • Capture the concrete pre-change signal that proves the task is not finished yet.
    • Use this checklist as a gate: mark each item done as evidence is produced during implementation, and do not proceed to validation until every checklist item has been addressed.
  3. Implement the task.

    • Keep scope tight to the task specification.
    • Follow repository patterns and real dependency APIs.
    • Record meaningful out-of-scope work as follow-up notes instead of silently expanding the task.
  4. Validate and self-review.

    • Run every test and validation command listed in the task specification — not just the repository-wide verification.
    • Use the installed cy-final-verify skill. This step is mandatory regardless of auto-commit mode — always verify before claiming completion.
    • Perform a self-review after verification and resolve every blocking issue before proceeding.

Read the full file on GitHub · 66 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 66 lines · 80 tokens per session scan A 976f78ba1d9a

Subscribe to this mod's changes

cy-execute-task is a skill published in the GitHub repository compozy/skeeper (85 stars, last pushed 3mo ago), licensed MIT. It adds 80 tokens to every session and 792 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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